Canon Rumours site, so might be just wishful thinking. Still it only software, so maybe Magic Lantern might offer a solution once they reverse engineer it.
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Can't find it there now. Might have been another of the many rumour sites. If it's not true, I might have a spare adaptor for sale....LOL.
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I see the firmware updates for the 5DS and 5DSr, and the 7D Mk II are on-line now, but nothing for the 5D Mk III. Oh well, I'm sure I'll be able to flog off the spare adaptor I ordered.
https://www.canon.com.au/en-AU/Perso...irmware-update